public class Example3_1
{
	public static void main(String args[])
	{
		char a1='十',a2='点',a3='进',a4='攻';
		char secret = 'A';
		a1 = (char)(a1^secret);
		a2 = (char)(a2^secret);
		a3 = (char)(a3^secret);
		a4 = (char)(a4^secret);
		System.out.println("密文："+a1+a2+a3+a4);
   		    a1 = (char)(a1^secret);
                a2 = (char)(a2^secret);
                a3 = (char)(a3^secret);
                a4 = (char)(a4^secret);
                System.out.println("密文："+a1+a2+a3+a4);
		}
}
